[INFO] cloning repository https://github.com/jayteedubya/follow-rust-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jayteedubya/follow-rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayteedubya%2Ffollow-rust-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayteedubya%2Ffollow-rust-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c4b732f31b9e27087d198b8d05d7cc65707a16d
[INFO] building jayteedubya/follow-rust-book against try#23647e694de8d0904848ad068b2e0ec2dd098c37+target=wasm32-wasip1 for pr-149868
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayteedubya%2Ffollow-rust-book" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jayteedubya/follow-rust-book
[INFO] finished tweaking git repo https://github.com/jayteedubya/follow-rust-book
[INFO] tweaked toml for git repo https://github.com/jayteedubya/follow-rust-book written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jayteedubya/follow-rust-book on toolchain 23647e694de8d0904848ad068b2e0ec2dd098c37
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23647e694de8d0904848ad068b2e0ec2dd098c37" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jayteedubya/follow-rust-book already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23647e694de8d0904848ad068b2e0ec2dd098c37" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+23647e694de8d0904848ad068b2e0ec2dd098c37" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9437e5112d0e764e96ae2a1e3d41f19833a4136e3658d2755dffd99de5927552
[INFO] running `Command { std: "docker" "start" "-a" "9437e5112d0e764e96ae2a1e3d41f19833a4136e3658d2755dffd99de5927552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9437e5112d0e764e96ae2a1e3d41f19833a4136e3658d2755dffd99de5927552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9437e5112d0e764e96ae2a1e3d41f19833a4136e3658d2755dffd99de5927552", kill_on_drop: false }`
[INFO] [stdout] 9437e5112d0e764e96ae2a1e3d41f19833a4136e3658d2755dffd99de5927552
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+23647e694de8d0904848ad068b2e0ec2dd098c37" "build" "--frozen" "--message-format=json" "--target" "wasm32-wasip1", kill_on_drop: false }`
[INFO] [stdout] 272b9894d48e197956af59fa1e39b0b13d74fe04ef4d7df9e4457a1a9d8e317d
[INFO] running `Command { std: "docker" "start" "-a" "272b9894d48e197956af59fa1e39b0b13d74fe04ef4d7df9e4457a1a9d8e317d", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling follow-the-rust-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0384]: cannot assign twice to immutable variable `x`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x = 5;
[INFO] [stdout]   |         - first assignment to `x`
[INFO] [stdout] 3 |     println!("The value of x is: {x}");
[INFO] [stdout] 4 |     x = 6;
[INFO] [stdout]   |     ^^^^^ cannot assign twice to immutable variable
[INFO] [stdout]   |
[INFO] [stdout] help: consider making this binding mutable
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut x = 5;
[INFO] [stdout]   |         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0384`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `follow-the-rust-book` (bin "follow-the-rust-book") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "272b9894d48e197956af59fa1e39b0b13d74fe04ef4d7df9e4457a1a9d8e317d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "272b9894d48e197956af59fa1e39b0b13d74fe04ef4d7df9e4457a1a9d8e317d", kill_on_drop: false }`
[INFO] [stdout] 272b9894d48e197956af59fa1e39b0b13d74fe04ef4d7df9e4457a1a9d8e317d